Emergency stop button and power equipment

Abstract

The application belongs to the technical field of electromechanical engineering, and discloses an emergency stop button and a power equipment. The emergency stop button comprises a shell frame assembly, a contact assembly and a pressing assembly. The shell frame assembly is provided with an emergency stop locking cavity and a reset locking cavity. The contact assembly is connected to the shell frame assembly and has an on-off state. The pressing assembly comprises a pressing head, a locking mechanism and an unlocking driving mechanism. The pressing head and the unlocking driving mechanism are both connected to the locking mechanism, and the pressing head is movably arranged in the shell frame assembly. The locking mechanism has a locking state of being engaged with the emergency stop locking cavity and an unlocking state of being engaged with the reset locking cavity. The pressing head drives the locking mechanism to switch between the locking state and the unlocking state under the action of external force, so as to switch the on-off state of the contact assembly. The unlocking driving mechanism is arranged in a trigger circuit and is used for driving the locking mechanism to switch from the locking state to the unlocking state. The emergency stop button can be manually reset through the pressing head, and can also be remotely controlled for timely reset, thereby shortening the shutdown time of the power equipment and reducing the operation and maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of electromechanical engineering technology, and in particular to an emergency stop button and electrical equipment. Background Technology

[0002] An emergency stop button is a device that can be pressed in an emergency to protect electrical equipment and prevent dangerous accidents. It is widely used in outdoor charging stations, intelligent robots, elevators, and other equipment. Once pressed, the emergency stop button is locked and requires external intervention to unlock and reset, such as by pulling or rotating it, to restore normal operation of the electrical equipment.

[0003] In existing technologies, after an emergency stop button is pressed and locked, technicians need to pull or rotate it on-site to unlock and reset it. However, most emergency stops of equipment are caused by human error. For unattended power equipment (such as self-service charging stations), maintenance personnel need to go to the site as soon as possible to restore the button, which consumes a lot of manpower and resources and has high maintenance costs.

[0004] Therefore, there is an urgent need for a new emergency stop button and electrical equipment to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an emergency stop button and electrical equipment to solve the problem that after the emergency stop button is pressed and locked, a dedicated person needs to go to the site to manually unlock and reset it, thereby reducing the waste of manpower and material resources and lowering the operation and maintenance costs of electrical equipment.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On the one hand, an emergency stop button is provided, including:

[0008] The frame assembly is equipped with an emergency stop lock chamber and a reset lock chamber;

[0009] A contact component, connected to the frame assembly and having an on / off state;

[0010] The pressing assembly includes a pressing head, a locking mechanism, and an unlocking drive mechanism. The pressing head and the unlocking drive mechanism are both connected to the locking mechanism. The pressing head is movably inserted through the housing assembly. The locking mechanism has a locked state that engages with the emergency stop locking cavity and an unlocked state that engages with the reset locking cavity.

[0011] The pressing head is used to apply external force to drive the locking mechanism to switch between the locked state and the unlocked state, so as to switch the on / off state of the contact component; the unlocking drive mechanism is configured to be located in the trigger circuit to drive the locking mechanism to switch from the locked state to the unlocked state.

[0012] As an optional embodiment of the emergency stop button provided by the present invention, the contact component is connected to the trigger circuit. The contact component conducts the trigger circuit when the locking mechanism is in the locked state and cuts off the trigger circuit when the locking mechanism is in the unlocked state.

[0013] As an optional solution for the emergency stop button provided by the present invention, the trigger circuit is used to control the rotation of the unlocking drive mechanism so that the locking mechanism switches from the locked state to the unlocked state under the drive of the unlocking drive mechanism.

[0014] As an optional solution for the emergency stop button provided by the present invention, the unlocking drive mechanism is rotatably provided with a drive shaft, which is connected to the locking mechanism; the pressing head is rotatably provided on the housing assembly and is aligned with the rotation axis of the drive shaft; the pressing assembly further includes an elastic reset member, which is connected between the pressing head and the housing assembly;

[0015] The locking mechanism rotates out of the emergency stop locking cavity under the drive of the pressing head or the drive shaft, and rotates into the reset locking cavity under the elastic force of the elastic reset member.

[0016] As an optional solution to the emergency stop button provided by the present invention, the locking mechanism includes a locking sleeve and an elastic locking element;

[0017] The pressing head and the drive shaft are both connected to the locking sleeve. The locking sleeve is rotatably disposed within the housing assembly along its own axis. A guide hole is provided radially on the locking sleeve. The elastic locking member is telescopically disposed in the guide hole. One end of the elastic locking member extending out of the guide hole can slide along the wall surface of the housing assembly and engage with the emergency stop locking cavity or the reset locking cavity.

[0018] As an optional solution for the emergency stop button provided by the present invention, the housing assembly is provided with a locking surface and an unlocking surface, the emergency stop locking cavity is recessed in the locking surface, the reset locking cavity is recessed in the unlocking surface, and the unlocking surface protrudes relative to the locking surface so that a first limiting surface is formed between the unlocking surface and the locking surface. An unlocking transition surface is provided on one side of the first limiting surface on the housing assembly, and both the locking surface and the unlocking surface are smoothly connected to the unlocking transition surface.

[0019] The elastic locking member can slide along the locking surface to the unlocking transition surface, and under the elastic force of the elastic reset member, slide from the unlocking transition surface to the unlocking surface.

[0020] As an optional embodiment of the emergency stop button provided by the present invention, the frame assembly has a second limiting surface and a third limiting surface that are disposed opposite to each other;

[0021] The second limiting surface is disposed on the side of the unlocking transition surface away from the first limiting surface, and is set at an angle to the unlocking transition surface;

[0022] The third limiting surface is disposed on the side of the locking surface away from the unlocking transition surface, and is set at an angle to the locking surface. The third limiting surface is connected to the first limiting surface and is set at an angle.

[0023] Both the second limiting surface and the third limiting surface are used to stop the elastic locking member.

[0024] As an optional solution to the emergency stop button provided by the present invention, the elastic locking member includes a first elastic member and a locking ball connected together. The end of the first elastic member away from the locking ball is connected to the guide hole. The locking ball has the states of being engaged in the emergency stop locking cavity and the reset locking cavity.

[0025] As an optional solution to the emergency stop button provided by the present invention, the contact assembly includes a mounting housing, a moving contact, a stationary contact, a contact support, and a second elastic member disposed within the mounting housing;

[0026] The mounting housing is connected to the frame assembly, the moving contact is mounted on the contact support, and the second elastic member is connected between the contact support and the mounting housing;

[0027] The contact support is used to drive the moving contact to contact the stationary contact under the push of the pressing assembly, and to drive the moving contact to separate from the stationary contact under the elastic force of the second elastic member.

[0028] As an optional embodiment of the emergency stop button provided by the present invention, the unlocking drive mechanism and the pressing head are respectively connected to both ends of the locking mechanism. The unlocking drive mechanism is movably disposed on the housing assembly, and the contact support can move under the push of the unlocking drive mechanism.

[0029] As an optional solution for the emergency stop button provided by the present invention, one of the unlocking drive mechanism and the housing assembly is provided with a guide groove, and the other is provided with a slider. The slider and the guide groove are slidably engaged along the moving direction of the unlocking drive mechanism.

[0030] On the other hand, an electrical device is provided, including a housing and an electrical structure disposed within the housing, wherein an emergency stop button as described above is provided on the housing, and the contact component of the emergency stop button is electrically connected to the electrical structure.

[0031] The beneficial effects of this invention are:

[0032] This invention provides an emergency stop button and a power device using the same button. During normal operation of the power device, the locking mechanism of the emergency stop button is engaged in a reset lock cavity. When the button's push-button is pressed, the push-button causes the locking mechanism to disengage from the reset lock cavity and re-engage in the emergency stop lock cavity, switching the locking mechanism to the locked state. Simultaneously, the contact components switch between on and off states, achieving an emergency stop for the power device. The emergency stop button has two reset methods: one is reset via the push-button, which drives the push-button to disengage the locking mechanism from the emergency stop lock cavity and re-engage in it, switching the locking mechanism to the unlocked state. At this time, the contact components switch back to the state that allows the power device to operate normally (which may be either on or off), completing the reset. The other reset method is achieved by controlling the unlocking drive mechanism through a trigger circuit, causing the unlocking drive mechanism to execute an unlocking command. In this case, the locking mechanism, driven by the unlocking drive mechanism, switches from the locked state to the unlocked state and re-engages in the reset lock cavity, causing the contact components to switch back to the state that allows the power device to operate normally. The emergency stop button can be manually reset on-site by pressing the head, or remotely reset by controlling the unlocking drive mechanism. It eliminates the need for on-site manual unlocking and reset, ensuring timely reset of the emergency stop button, shortening the downtime of power equipment, reducing waste of manpower and resources, and lowering the operation and maintenance costs of power equipment. Attached Figure Description

[0033] Figure 1 This is an isometric view of the emergency stop button provided in a specific embodiment of the present invention;

[0034] Figure 2 This is a cross-sectional view of the emergency stop button provided in a specific embodiment of the present invention;

[0035] Figure 3 This is an exploded view of the emergency stop button provided in a specific embodiment of the present invention;

[0036] Figure 4 This is an exploded view of the pressing component of the emergency stop button provided in a specific embodiment of the present invention;

[0037] Figure 5 This is an exploded view of the contact component of the emergency stop button provided in a specific embodiment of the present invention;

[0038] Figure 6 This is an internal schematic diagram of the contact component of the emergency stop button provided in a specific embodiment of the present invention;

[0039] Figure 7 This is an exploded view of the unlocking drive mechanism provided in a specific embodiment of the present invention;

[0040] Figure 8 This is a schematic diagram of the structure of the lock sleeve provided in a specific embodiment of the present invention;

[0041] Figure 9 This is a schematic diagram of the structure of the elastic reset member provided in a specific embodiment of the present invention;

[0042] Figure 10 This is a schematic diagram of the structure of the pressing head provided in a specific embodiment of the present invention;

[0043] Figure 11 This is a first view of the frame assembly provided in a specific embodiment of the present invention;

[0044] Figure 12 This is a second view of the frame assembly provided in a specific embodiment of the present invention;

[0045] Figure 13 This is a third view of the frame assembly provided in a specific embodiment of the present invention;

[0046] Figure 14 This is a fourth view of the frame assembly provided in a specific embodiment of the present invention;

[0047] Figure 15 This is the fifth view of the frame assembly provided in a specific embodiment of the present invention.

[0048] In the picture:

[0049] 1. Frame assembly; 2. Contact assembly; 3. Pressing assembly; 4. Mounting plate; 5. On / off assembly;

[0050] 11. Locking surface; 12. Unlocking surface; 13. First limiting surface; 14. Unlocking transition surface; 15. Second limiting surface; 16. Third limiting surface; 17. Fourth limiting surface; 18. Fifth limiting surface; 19. Second cylinder; 110. Limiting hole; 120. Limiting flange; 130. First limiting step; 140. Limiting groove; 150. Guide groove; 160. Second buckle;

[0051] 111. Emergency stop locking chamber; 121. Reset locking chamber;

[0052] 21. Mounting housing; 22. Moving contact; 23. Stationary contact; 24. Contact support; 25. Second elastic element; 26. Wiring assembly; 27. Contact bridge; 28. Third elastic element;

[0053] 211. First housing; 2111. Hook; 212. Second housing;

[0054] 241. Push rod; 242. Mounting cavity; 243. Support part;

[0055] 261. Terminal block; 262. Terminal screw;

[0056] 31. Press head; 32. Locking mechanism; 33. Unlocking drive mechanism; 34. Elastic reset component; 35. Limit key;

[0057] 311. Pressing part; 312. First cylinder; 313. Connecting column; 314. Limiting rib; 315. Boss;

[0058] 3111, Indicator structure; 3131, Limiting plate; 3132, First buckle; 3151, Stop surface;

[0059] 321. Lock sleeve; 322. Resilient locking element;

[0060] 3211, Guide hole; 3212, Slot; 3213, Slot hole; 3214, Key hole; 3215, Second limiting step;

[0061] 3221, First elastic element; 3222, Locking bead;

[0062] 331. Rotary electric motor; 332. Mounting bracket;

[0063] 3311, Drive shaft; 3312, Motor housing; 3313, Wire;

[0064] 3321. Chest; 3322. Claw; 3323. Slider; 3324. Wire guide hole;

[0065] 341. Compression spring; 342. First torsion arm; 343. Second torsion arm. Detailed Implementation

[0066] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0067] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0068] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0069] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0070] Electrical equipment is typically equipped with an emergency stop button, which can be pressed in an emergency to protect the equipment or prevent dangerous accidents. In existing electrical equipment, once the emergency stop button is pressed and locked, technicians must pull or rotate it on-site to unlock and reset it. However, most emergency stops are caused by human error. For unattended electrical equipment, maintenance personnel must immediately go to the site to reset the button, consuming significant manpower and resources, resulting in high maintenance costs.

[0071] Based on the above-mentioned shortcomings, this embodiment provides an emergency stop button that can be applied to power equipment such as charging stations and robots. This solves the problem that after the emergency stop button is pressed and locked, a dedicated person needs to go to the site to manually unlock and reset it, thereby reducing the waste of manpower and material resources and lowering the operation and maintenance costs of power equipment.

[0072] like Figure 1 , Figure 2 as well as Figure 3 As shown, the emergency stop button includes a housing assembly 1, a contact assembly 2, and a pressing assembly 3. Pressing the pressing assembly 3 enables an emergency stop of the device. For ease of description, in this embodiment, the pressing direction of the pressing assembly 3 is defined as direction A.

[0073] See Figure 1 , Figure 2 , Figure 3 as well as Figure 4The frame assembly 1 includes an emergency stop locking cavity 111 and a reset locking cavity 121, which are arranged sequentially along direction A. A contact assembly 2 is connected to the frame assembly 1 and electrically connected to the internal electrical structure of the power equipment. The contact assembly 2 has two working states: on and off, to enable or disable the relevant circuits controlling emergency stop and reset in the electrical structure, thereby achieving emergency stop or resumption of operation of the power equipment. A pressing assembly 3 includes a pressing head 31, a locking mechanism 32, and an unlocking drive mechanism 33. Both the pressing head 31 and the unlocking drive mechanism 33 are connected to the locking mechanism 32. The pressing head 31 is movably inserted into the frame assembly 1 along direction A. The locking mechanism 32 has a locked state engaged with the emergency stop locking cavity 111 and an unlocked state engaged with the reset locking cavity 121. When the locking mechanism 32 is in the locked state, the power equipment is in an emergency stop state; when the locking mechanism 32 is in the unlocked state, the power equipment is in an operating state.

[0074] In this embodiment, the pressing head 31 is used to apply external force to drive the locking mechanism 32 to switch between a locked state and an unlocked state. Simultaneously with the switching of the locking mechanism 32, the contact component 2 switches between on and off states under the drive of the locking mechanism 32, thereby switching the power equipment between an emergency stop state and a normal operating state. The unlocking drive mechanism 33 is configured in the trigger circuit to drive the locking mechanism 32 from the locked state to the unlocked state, realizing the remote unlocking of the emergency stop button. Specifically, the trigger circuit can receive a remote unlocking control command. Upon receiving the remote unlocking control command, the trigger circuit controls the unlocking drive mechanism 33 to operate, causing the unlocking drive mechanism 33 to drive the locking mechanism 32 from the locked state to the unlocked state, thereby realizing the remote reset of the emergency stop button.

[0075] Specifically, during normal operation of the power equipment, the locking mechanism 32 of the emergency stop button is engaged in the reset locking cavity 121. When the pressing head 31 of the emergency stop button is pressed in direction A, the pressing head 31 drives the locking mechanism 32 to disengage from the reset locking cavity 121 and engage in the emergency stop locking cavity 111. The locking mechanism 32 switches to the locked state, and at the same time, the contact component 2 switches between on and off states to achieve emergency stop of the power equipment. For example, when the locking mechanism 32 is engaged in the reset locking cavity 121, the contact component 2 is in the off state (conducting state). When the locking mechanism 32 switches to the engaged state in the emergency stop locking cavity 111, the contact component 2 is in the conducting state (off state). This can be adapted to the circuit within the power equipment, as long as the emergency stop of the equipment can be achieved.

[0076] The emergency stop button has two reset methods. One method involves resetting via the pressing head 31, which drives the locking mechanism 32 out of the emergency stop lock cavity 111 and back into the reset lock cavity 121, switching the locking mechanism 32 to the unlocked state. At this time, the contact component 2 switches back to the state that allows the electrical equipment to operate normally (it may be in a conducting or disconnected state), and the reset is complete. The other reset method involves controlling the unlocking drive mechanism 33 via a trigger circuit, causing the unlocking drive mechanism 33 to execute an unlocking command. At this time, the locking mechanism 32, driven by the unlocking drive mechanism 33, switches from the locked state to the unlocked state and back into the reset lock cavity 121, causing the contact component 2 to switch back to the state that allows the electrical equipment to operate normally.

[0077] The emergency stop button can be manually unlocked and reset on-site by pressing the head 31, or remotely unlocked and reset by controlling the unlocking drive mechanism 33. This eliminates the need for on-site manual unlocking and reset, ensuring that the emergency stop button is reset in a timely manner, shortening the downtime of power equipment, reducing the waste of manpower and resources, and lowering the operation and maintenance costs of power equipment.

[0078] In this embodiment, see Figure 5 and Figure 6 The contact assembly 2 includes a mounting housing 21, and a moving contact 22, a stationary contact 23, a contact support 24, and a second elastic member 25 disposed within the mounting housing 21. When the locking mechanism 32 is in the unlocked state, the contact assembly 2 is in the cut-off state; when the locking mechanism 32 is in the locked state, the contact assembly 2 switches to the conductive state.

[0079] Specifically, the mounting housing 21 is connected to the frame assembly 1, the moving contact 22 is mounted on the contact support 24, and the moving contact 22 and the stationary contact 23 are arranged sequentially along direction A. The contact support 24 is movably disposed within the mounting housing 21 along direction A, and the second elastic member 25 is disposed between the contact support 24 and the mounting housing 21. See [reference needed] Figure 5The second elastic element 25 is specifically disposed between the bottom of the contact support 24 and the bottom wall of the mounting housing 21. The contact support 24 is used to drive the moving contact 22 to contact the stationary contact 23 under the push of the pressing component 3, and to drive the moving contact 22 to separate from the stationary contact 23 under the elastic force of the second elastic element 25. When the emergency stop button is in the reset state (i.e., the locking mechanism 32 is in the unlocked state), the moving contact 22 is separated from the stationary contact 23, and the contact component 2 is in the cut-off state. When the pressing component 3 is pressed in the A direction, the pressing component 3 moves in the A direction and pushes against the contact support 24. The contact support 24 drives the moving contact 22 to move in the A direction so that the moving contact 22 contacts the stationary contact 23, switching the contact component 2 to the conducting state and realizing the emergency stop of the power equipment. During this process, the contact support 24 compresses the second elastic element 25, so that the second elastic element 25 accumulates potential energy. When the locking mechanism 32 switches from the locked state to the unlocked state under the drive of the pressing head 31 or the unlocking drive mechanism 33, the pressing component 3 no longer pushes against the contact support 24, the second elastic element 25 releases its elastic potential energy, and the contact support 24 is lifted up, so that the moving contact 22 is separated from the stationary contact 23 under the drive of the contact support 24, the contact component 2 switches back to the cut-off state, realizes the reset of the emergency stop button, and restores the operation of the power equipment.

[0080] Optionally, the bottom of the contact support 24 is provided with a mounting groove, the bottom of the mounting housing 21 is provided with a first protrusion, and the second elastic member 25 is exemplarily a spring, one end of which is inserted into the mounting groove and the other end is sleeved on the first protrusion to ensure the stability of the installation.

[0081] In this embodiment, the mounting housing 21 contains a first chamber and two second chambers, with the two second chambers located on either side of the first chamber. The contact support 24 is movably mounted within the first chamber along direction A. (See attached image.) Figure 5 and Figure 6 The upper end of the contact support 24 has a push rod 241, which movably passes through the mounting housing 21 for contacting the pressing assembly 3. A wiring assembly 26 is installed in each of the two second chambers. Each wiring assembly 26 includes a wiring plate 261 and wiring screws 262 threaded onto the wiring plate 261. Two stationary contacts 23 are spaced apart on each wiring plate 261. The contact support 24 has a mounting cavity 242, within which a support portion 243 is provided. A contact bridge 27 is mounted on the support portion 243, with both ends of the contact bridge 27 extending out of the mounting cavity 242. Each end of the contact bridge 27 has two spaced-apart moving contacts 22. The four moving contacts 22 on the contact bridge 27 correspond one-to-one with the stationary contacts 23 on the wiring plate 261, ensuring reliable contact. When the contact support 24 moves along direction A, the contact bridge 27 and the moving contact 22 thereon move accordingly to make contact with the stationary contact 23 on the terminal block 261 in a one-to-one correspondence.

[0082] Furthermore, a third elastic element 28 is provided between the contact bridge 27 and the top wall of the mounting cavity 242. When the moving contact 22 contacts the stationary contact 23, the third elastic element 28 is slightly compressed, so that the contact between the moving contact 22 and the stationary contact 23 is a flexible contact rather than a rigid contact, thus avoiding damage to the moving contact 22 and the stationary contact 23, as well as deformation of the contact bridge 27 and the terminal block 261.

[0083] Optionally, the third elastic element 28 is a spring, a second protrusion is provided on the top wall of the mounting cavity 242, and a third protrusion is provided on the contact bridge 27. One end of the third elastic element 28 is fitted onto the second protrusion, and the other end is fitted onto the third protrusion to ensure installation stability.

[0084] See Figure 5 The mounting housing 21 includes a first housing 211 and a second housing 212 that are interlocked. The contact support 24, wiring assembly 26, second elastic member 25, etc. are all disposed inside the first housing 211. After the internal components of the first housing 211 are installed, the second housing 212 can be interlocked, making installation convenient.

[0085] See Figure 1 , Figure 2 and Figure 3 The housing assembly 1 has a mounting plate 4 at the end away from the pressing head 31, and the contact assembly 2 is connected to the mounting plate 4. Specifically, see [link to documentation]. Figure 5 Both ends of the first housing 211 are provided with hooks 2111, and the mounting plate 4 is provided with a snap-fit ​​part corresponding to the hooks 2111. The hooks 2111 engage with the snap-fit ​​parts one by one to realize the snap-fit ​​between the contact component 2 and the mounting plate 4.

[0086] It should be noted that this embodiment only illustrates one structure of the contact component 2. In other embodiments, any contact component 2 that can switch between on and off states by pressing can be applied to the emergency stop button of this application.

[0087] Optionally, see Figure 4 The unlocking drive mechanism 33 and the pressing head 31 are respectively connected to both ends of the locking mechanism 32. The unlocking drive mechanism 33 is movably mounted on the housing assembly 1. When the pressing head 31 is pressed along direction A, the pressing head 31 pushes the locking mechanism 32 and the unlocking drive mechanism 33 to move along direction A, so that the end of the unlocking drive mechanism 33 facing away from the locking mechanism 32 pushes the contact support member 24, realizing the contact between the moving contact 22 and the stationary contact 23. Since both the unlocking drive mechanism 33 and the pressing head 31 are linked to the locking mechanism 32, it is more reasonable to arrange the locking mechanism 32 between the unlocking drive mechanism 33 and the pressing head 31. The design of the unlocking drive mechanism 33 pushing against the contact support member 24 makes the structure simple and compact.

[0088] Further, see Figure 2 , Figure 7 as well as Figure 13 The unlocking drive mechanism 33 is provided with a slider 3323, and the housing assembly 1 is provided with a guide groove 150. The slider 3323 and the guide groove 150 are slidably engaged along the moving direction (i.e., direction A) of the unlocking drive mechanism 33 to ensure the accuracy and stability of the unlocking drive mechanism 33 when moving along direction A. In other embodiments, the guide groove 150 can also be provided on the unlocking drive mechanism 33, and the slider 3323 can be provided on the housing assembly 1, which can also play a guiding role.

[0089] Of course, in other embodiments, the unlocking drive mechanism 33 can also be fixedly mounted on the housing assembly 1 and used only to drive the locking mechanism 32 to switch to the unlocked state. Alternatively, a push rod can be connected to the end of the locking mechanism 32 away from the pressing head 31, and the contact support member 24 can be pushed by this push rod.

[0090] In this embodiment, see Figure 2 The housing assembly 1 is generally cylindrical and has an internal cavity. The locking mechanism 32 and the unlocking drive mechanism 33 are both installed in the cavity of the housing assembly 1, which provides good sealing protection for the locking mechanism 32 and the unlocking drive mechanism 33.

[0091] In this embodiment, the trigger circuit is used to control the rotation of the unlocking drive mechanism 33, so that the locking mechanism 32 switches from the locked state to the unlocked state under the drive of the unlocking drive mechanism 33. That is, the emergency stop button is reset by rotation unlocking reset. The rotation unlocking reset method is more convenient and less strenuous than the pull unlocking reset method, and it does not have the defect that the pressing head 31 is easy to detach from the housing assembly 1 due to the pull reset method.

[0092] Optionally, see Figure 2 and Figure 7A drive shaft 3311 is rotatably mounted on the unlocking drive mechanism 33, and the drive shaft 3311 is connected to the locking mechanism 32. A pressing head 31 is rotatably mounted on the housing assembly 1 and is aligned with the rotation axis of the drive shaft 3311. The pressing assembly 3 also includes an elastic reset member 34, which is connected between the pressing head 31 and the housing assembly 1. Both the pressing head 31 and the unlocking drive mechanism 33 can drive the locking mechanism 32 to rotate, causing the locking mechanism 32 to rotate away from the emergency stop locking cavity 111. During this process, the pressing head 31 or the unlocking drive mechanism 33 drives the elastic reset member 34 to twist, causing the elastic reset member 34 to undergo torsional elastic deformation. It should be noted that when the emergency stop is pressed, the elastic reset member 34 is already in a compressed and energy-storing state under the drive of the pressing head 31. Therefore, after the pressing head 31 or the unlocking drive mechanism 33 drives the elastic reset member 34 to twist, the elastic reset member 34 is now in a compressed and torsional energy-storing state. After the locking mechanism 32 rotates into position under the drive of the pressing head 31 or the unlocking drive mechanism 33, the pressing head 31 or the unlocking drive mechanism 33 stops rotating, and the elastic reset member 34 releases its elastic potential energy, so that the locking mechanism 32 rotates and engages in the reset lock cavity 121 under the elastic force of the elastic reset member 34, thereby resetting the emergency stop button.

[0093] For example, see Figure 7 The unlocking drive mechanism 33 includes a rotary motor 331 and a mounting base 332 for mounting the rotary motor 331. The rotary motor 331 includes a motor housing 3312 and the aforementioned drive shaft 3311. The rotary motor 331 is located in a trigger circuit. After the rotary motor 331 is started by the trigger circuit, the drive shaft 3311 rotates relative to the motor housing 3312, causing the locking mechanism 32 to rotate out of the emergency stop locking cavity 111. The mounting base 332 has a recessed locking cavity 3321, and the bottom end of the motor housing 3312 is locked within this cavity. The mounting base 332 is provided with a locking claw 3322, which is used to hook and lock the motor housing 3312. Figure 4 As shown, after the rotary motor 331 and the mounting base 332 are assembled, the bottom surface of the motor housing 3312 contacts the bottom wall of the retaining cavity 3321 on the mounting base 332, and the retaining claws 3322 contact the top surface of the motor housing 3312, ensuring the stability of the rotary motor 331 on the mounting base 332. Furthermore, the mounting base 332 is provided with two retaining claws 3322, located on opposite sides of the mounting base 332, ensuring even force distribution on the motor housing 3312 after it is hooked and further improving the installation stability. The number of retaining claws 3322 can be increased; this is not limited here.

[0094] See Figure 2 The bottom surface of the mounting base 332 is used to push against the contact support 24, so that the contact support 24 drives the moving contact 22 to contact the stationary contact 23.

[0095] Further, see Figure 7 The mounting base 332 has sliders 3323 protruding from both opposite outer side walls, see [reference]. Figure 13 The inner walls of the housing assembly 1 are provided with guide grooves 150 on both sides to cooperate with the slider 3323, thereby improving the movement accuracy and stability of the unlocking drive mechanism 33 within the housing assembly 1.

[0096] See Figure 2 , Figure 4 as well as Figure 10 The pressing head 31 is mushroom-shaped and includes a pressing part 311, a first cylindrical body 312, and a connecting post 313. The connecting post 313 protrudes from the center of the pressing part 311. The first cylindrical body 312 is connected to the pressing part 311 and is spaced around the connecting post 313. The first cylindrical body 312 is fitted onto the outer shell assembly 1 and can move relative to the shell assembly 1 in direction A and rotate relative to the shell assembly 1 around direction A. The connecting post 313 penetrates into the shell assembly 1 and is connected to the locking mechanism 32 to drive the locking mechanism 32 to move along and rotate around direction A.

[0097] Combination Figure 12 A second cylindrical body 19 is provided inside the frame assembly 1, and the second cylindrical body 19 is spaced apart from the outer wall of the frame assembly 1. The locking mechanism 32 passes through the second cylindrical body 19.

[0098] See Figure 9 The elastic reset member 34 includes a compression spring portion 341 with a compression stroke. The two ends of the compression spring portion 341 are respectively provided with a first torsion arm 342 and a second torsion arm 343, so that the elastic reset member 34 has both elastic compression performance and elastic torsion performance.

[0099] See Figure 10 A boss 315 is provided at the center of the pressing part 311. The boss 315 has a stop surface 3151, which is parallel to the A direction. (See figure) Figure 12 The housing assembly 1 is provided with a limiting hole 110, which is located between the second cylinder 19 and the outer wall of the housing assembly 1. The first torsion arm 342 of the elastic reset member 34 abuts against the stop surface 3151, the compression spring part 341 is sleeved on the second cylinder 19, and the second torsion arm 343 passes through the limiting hole 110, thus establishing a linkage relationship between the pressing head 31 and the housing assembly 1.

[0100] When the pressing assembly 3 is pressed down via the pressing part 311 to achieve emergency stop locking, the spring part 341 of the elastic reset member 34 is compressed. When the pressing head 31 is rotated, the elastic reset member 34 is twisted due to the presence of the first torsion arm 342 and the second torsion arm 343. At this time, the elastic reset member 34 is in a compressed and torsional energy storage state. After releasing the pressing head 31, the elastic reset member 34 can drive the pressing head 31 and the locking mechanism 32 to rotate in the opposite direction and move back to the reset state along direction A. When the drive shaft 3311 drives the locking mechanism 32 to rotate and unlock, the locking mechanism 32 is connected to the pressing head 31 via the connecting post 313, so it can drive the pressing head 31 to rotate synchronously, causing the elastic reset member 34 to elastically deform and achieve unlocking.

[0101] See Figure 2 , Figure 4 as well as Figure 8 The locking mechanism 32 includes a locking sleeve 321 and at least one elastic locking member 322. The pressing head 31 and the drive shaft 3311 are both connected to the locking sleeve 321, enabling the locking mechanism 32 to rotate. The locking sleeve 321 is rotatably disposed within the second cylinder 19 of the frame assembly 1 along its own axis (i.e., direction A). The locking sleeve 321 has a radially arranged guide hole 3211 corresponding to the elastic locking member 322. The elastic locking member 322 is telescopically disposed within the guide hole 3211. One end of the elastic locking member 322 extending out of the guide hole 3211 can slide along the wall surface of the frame assembly 1 and engage with the emergency stop locking cavity 111 or the reset locking cavity 121. Because the elastic locking element 322 can adapt to elastic deformation, it can slide against the wall of the frame assembly 1 under the action of elastic force. When it slides to be aligned with the emergency stop locking cavity 111 or the reset locking cavity 121, it automatically locks into the emergency stop locking cavity 111 or the reset locking cavity 121 to realize emergency stop locking and unlocking reset.

[0102] Further, see Figure 2 and Figure 4 The elastic locking member 322 includes a first elastic member 3221 and a locking ball 3222 connected together. The end of the first elastic member 3221 away from the locking ball 3222 is connected to the guide hole 3211. The locking ball 3222 has states of being engaged in the emergency stop locking cavity 111 and the reset locking cavity 121. In this embodiment, see... Figure 11 Both the emergency stop locking cavity 111 and the reset locking cavity 121 are round holes adapted to the locking ball 3222. The outer surface of the locking ball 3222 is spherical, making it easier to disengage from and engage with the emergency stop locking cavity 111 and the reset locking cavity 121.

[0103] Optionally, the locking ball 3222 is a steel ball, which can complete multiple locking and unlocking without deformation.

[0104] In this embodiment, the number of elastic locking element 322, emergency stop locking cavity 111, and reset locking cavity 121 are the same and they are arranged in a one-to-one correspondence. This can be set according to specific design requirements.

[0105] See Figure 14 and Figure 15 The frame assembly 1 is provided with a locking surface 11 and an unlocking surface 12. An emergency stop locking cavity 111 is recessed in the locking surface 11 and extends through the side wall of the frame assembly 1. A reset locking cavity 121 is recessed in the unlocking surface 12 and extends through the side wall of the frame assembly 1. Both the locking surface 11 and the unlocking surface 12 are located on the inner side wall of the frame assembly 1, and the unlocking surface 12 protrudes relative to the locking surface 11, so that a first limiting surface 13 is formed between the unlocking surface 12 and the locking surface 11. That is, the unlocking surface 12, the first limiting surface 13, and the locking surface 11 are sequentially connected to form a stepped structure. The first limiting surface 13 is provided to prevent the locking ball 3222 from directly disengaging from the emergency stop locking cavity 111 along direction A and getting stuck in the reset locking cavity 121. An unlocking transition surface 14 is provided on one side of the first limiting surface 13 on the housing assembly 1. The locking surface 11 and the unlocking surface 12 are both smoothly connected to the unlocking transition surface 14. That is, the size of the first limiting surface 13 gradually thins along the radial direction of the housing assembly 1. With this configuration, after the locking ball 3222 rotates out of the emergency stop locking cavity 111, it slides along the locking surface 11 to the unlocking transition surface 14. At this time, the first limiting surface 13 no longer obstructs the movement of the locking ball 3222 in the A direction. Under the elastic force of the elastic reset member 34, the locking mechanism 32 rotates and moves towards the reset locking cavity 121. During this period, the locking ball 3222 slides along the unlocking transition surface 14 to the unlocking surface 12 until it is inserted into the reset locking cavity 121 on the unlocking surface 12, completing the button unlocking and reset.

[0106] In this embodiment, the direction in which the locking ball 3222 rotates from the emergency stop locking cavity 111 to the unlocking transition surface 14 is defined as the unlocking direction. Further, see... Figure 4 The pressing part 311 is provided with an indicator structure 3111 for indicating the unlocking direction. The indicator structure 3111 is a clockwise or counterclockwise indicator arrow.

[0107] See Figure 14 and Figure 15The housing assembly 1 has a second limiting surface 15 and a third limiting surface 16 arranged opposite to each other. When the elastic locking member 322 slides along the wall surface of the housing assembly 1, both the second limiting surface 15 and the third limiting surface 16 are used to stop the elastic locking member 322. Specifically, the second limiting surface 15 is located on the side of the unlocking transition surface 14 away from the first limiting surface 13 and is set at an angle to the unlocking transition surface 14. When the locking ball 3222 slides along the locking surface 11 and the unlocking transition surface 14 to abut against the second limiting surface 15, it indicates that the rotation is in place. At this time, the pressing head 31 can be released or the drive shaft 3311 can be stopped from continuing to rotate. The third limiting surface 16 is located on the side of the locking surface 11 away from the unlocking transition surface 14 and is set at an angle to the locking surface 11. The third limiting surface 16 is connected to the first limiting surface 13 and is set at an angle. Due to the obstruction of the first limiting surface 13 and the third limiting surface 16, the lock ball 3222 cannot rotate in the opposite direction of the unlocking direction and get stuck in the reset lock cavity 121. When the pressing head 31 or the drive shaft 3311 rotates the locking mechanism 32 in the opposite direction of the unlocking direction, the unlocking and reset cannot be achieved.

[0108] Continue reading Figure 14 and Figure 15 The housing assembly 1 also includes a fourth limiting surface 17 and a fifth limiting surface 18. The fourth limiting surface 17 is located on the side of the unlocking transition surface 14 away from the unlocking surface 12 and is connected to the second limiting surface 15. The fifth limiting surface 18 is located on the side of the unlocking surface 12 away from the unlocking transition surface 14. When the locking ball 3222 rotates, it is restricted between the fourth limiting surface 17 and the fifth limiting surface 18, preventing the locking ball 3222 from rotating beyond its travel during the unlocking and reset process.

[0109] See Figure 2 and Figure 12 The outer wall of the frame assembly 1 is provided with a limiting flange 120. When the pressing head 31 is pressed down in the A direction, the limiting flange 120 is used to stop the first cylinder 312 of the pressing head 31 to prevent the pressing head 31 from overtraveling when it stops pressing suddenly.

[0110] See Figure 2 , Figure 8 as well as Figure 13 The housing assembly 1 is provided with a first limiting step 130. The locking sleeve 321 is approximately T-shaped, with second limiting steps 3215 formed on both sides. The second limiting steps 3215 are located below the first limiting step 130. When the locking mechanism 32 moves along direction A to the unlocked state, the second limiting step 3215 engages with the first limiting step 130 to prevent the locking mechanism 32 and the pressing head 31 from moving beyond their travel range during the unlocking process.

[0111] See Figure 2 , Figure 10 as well as Figure 12The inner wall of the first cylinder 312 is provided with limiting ribs 314 on both opposite sides. Correspondingly, a limiting groove 140 is provided on each opposite side of the outer wall of the shell assembly 1. The limiting ribs 314 are rotatably inserted into the limiting grooves 140 around direction A. The two groove walls of the limiting grooves 140 cooperate with the limiting ribs 314 to limit the rotation angle of the pressing head 31 and prevent the pressing head 31 from rotating beyond its travel.

[0112] In order to enable both the pressing head 31 and the drive shaft 3311 to drive the locking sleeve 321 to rotate, circumferential limiting structures are provided between the pressing head 31 and the locking sleeve 321, and between the drive shaft 3311 and the locking sleeve 321, so that the locking sleeve 321 can rotate when the pressing head 31 or the drive shaft 3311 is rotated.

[0113] See Figure 4 , Figure 8 and Figure 10 The connecting post 313 passes into the locking sleeve 321. The outer wall of the connecting post 313 protrudes with two limiting plates 3131 and two first latches 3132. The two limiting plates 3131 are arranged along the first diameter direction of the connecting post 313, and the two first latches 3132 are arranged along the second diameter direction of the connecting post 313. The first diameter is perpendicular to the second diameter. Correspondingly, the locking sleeve 321 is provided with two slots 3212 and two holes 3213. The slots 3212 extend along direction A, and the holes 3213 penetrate the side wall of the locking sleeve 321. The two limiting plates 3131 engage with the two slots 3212 in a one-to-one correspondence, and the two first latches 3132 engage with the two holes 3213 in a one-to-one correspondence, achieving a stable connection and circumferential limiting between the pressing head 31 and the locking sleeve 321.

[0114] See Figure 7 and Figure 8 The lock sleeve 321 is provided with a keyhole 3214, and a limit key 35 is installed in the keyhole 3214. The drive shaft 3311 passes through the bottom of the lock sleeve 321 and extends into the through hole of the limit key 35. The through hole of the limit key 35 and the cross-section of the drive shaft 3311 are both non-circular so that the limit key 35 can rotate synchronously with the drive shaft 3311. Then, the limit key 35 drives the lock sleeve 321 to rotate through the cooperation with the keyhole 3214.

[0115] In this embodiment, the contact component 2 is connected to the trigger circuit. The contact component 2 connects the trigger circuit when the locking mechanism 32 is in the locked state and disconnects the trigger circuit when the locking mechanism 32 is in the unlocked state. That is, the contact component 2 is used to control the on and off of the trigger circuit. When the pressing component 3 is pressed to make the button stop urgently, the locking mechanism 32 engages with the emergency stop lock cavity 111. The contact support 24 is pushed by the mounting base 332 to drive the moving contact 22 to contact the stationary contact 23, so that the contact component 2 switches to the conducting state. At the same time, the trigger circuit is connected. At this time, the drive shaft 3311 of the rotary motor 331 can be rotated by the power supply of the trigger circuit to achieve unlocking and reset. When the button is unlocked and reset, the locking mechanism 32 is engaged in the reset lock cavity 121, the moving contact 22 separates from the stationary contact 23, and the contact component 2 switches to the cut-off state. At the same time, the trigger circuit is cut off. At this time, the trigger circuit continues to be powered, and the rotary motor 331 will not be energized to make the drive shaft 3311 rotate. This prevents the rotary motor 331 from continuing to rotate and being limited by the limiting structure if the power supply to the trigger circuit is not disconnected in time, thus preventing it from burning out. It also reduces the response requirements of the external remote system, eliminating the need to terminate the external power supply at the moment the product is unlocked. Moreover, with the contact component 2 disconnected, even if the trigger circuit is accidentally powered, the drive shaft 3311 of the rotary motor 331 cannot be driven to rotate, preventing the drive shaft 3311 from being accidentally rotated and jammed inside the housing assembly 1.

[0116] Specifically, see Figure 4 , Figure 6 and Figure 7 Two wires 3313 are connected to the rotary motor 331. A wire hole 3324 is provided on the bottom wall of the mounting base 332 and the cavity 3321. The two wires 3313 pass through the wire hole 3324. Two wiring components 26 are provided in the contact component 2. One wire 3313 is connected to the wiring screw 262 of one wiring component 26, and the other wire 3313 is connected to the wiring screw 262 of the other wiring component 26 to form a trigger circuit, so as to connect the contact component 2 to the trigger circuit.

[0117] In this embodiment, a switching component 5 is also hooked onto the mounting plate 4. The switching component 5 switches between on and off states under the push of the mounting base 332 of the unlocking drive mechanism 33, and is used by the emergency stop button itself to control the switching of other circuits (excluding circuits related to controlling emergency stop and reset). The switching component 5 can be a normally open contact group or a normally closed contact group, and its structure can be the same as that of the contact component 2, which will not be described in detail here.

[0118] See Figure 11The housing assembly 1 has a second latch 160 at the end away from the pressing head 31. The mounting plate 4 has a mounting hole, and the side wall of the mounting hole has a snap-fit ​​part. The second latch 160 engages with the snap-fit ​​part to achieve a stable connection between the mounting plate 4 and the housing assembly 1. The number of second latches 160 can be multiple, and there is no limit to this.

[0119] This embodiment also provides a power device, including a housing and an electrical structure disposed within the housing. An emergency stop button, as described above, is provided on the housing. The contact component 2 of the emergency stop button is electrically connected to the electrical structure and is used to control the emergency stop and reset of the electrical structure. The specific steps for controlling the emergency stop and reset of the electrical structure and the resulting effects are as described above.

[0120] The following is a brief description of the general working process of the emergency stop button provided in this embodiment.

[0121] Emergency stop locking process:

[0122] When the pressing head 31 is pressed along direction A, the pressing head 31 drives the locking mechanism 32 and the unlocking drive mechanism 33 to move along direction A. During this process, the locking ball 3222 of the locking mechanism 32 disengages from the reset locking cavity 121 and engages in the emergency stop locking cavity 111. Simultaneously, the mounting base 332 of the unlocking drive mechanism 33 pushes against the contact support member 24 of the contact assembly 2. The contact support member 24 drives the moving contact 22 to move, so that the moving contact 22 contacts the stationary contact 23, causing the contact assembly 2 to switch to the conducting state. At the same time as the contact assembly 2 is conducting, the trigger circuit is also conducting. During the emergency stop locking process, the elastic reset member 34 is compressed by the pressing head 31.

[0123] Unlock and reset process:

[0124] a) Manually unlock and reset by rotating the pressing head 31.

[0125] When maintenance personnel arrive at the power equipment site, they manually rotate the pressing head 31 in the direction indicated by the indicating structure 3111. The pressing head 31 drives the locking mechanism 32 to rotate in the unlocking direction. Since the drive shaft 3311 is connected to the locking mechanism 32, and the motor housing 3312 is circumferentially confined within the frame assembly 1 (the circumferential limiting method is the cooperation of the slider 3323 and the guide groove 150), it cannot rotate. Therefore, the drive shaft 3311 rotates relative to the motor housing 3312 under the drive of the locking mechanism 32. The locking ball 3222 of the locking mechanism 32 rotates out of the emergency stop locking cavity 111 and slides along the locking surface 11 to the unlocking transition surface 14. At this time, the first limiting surface 13 no longer blocks the locking ball 3222, and the elastic reset member 34 is in a compressed and torsional energy storage state. Subsequently, the pressing head 31 is released, and under the elastic force of the elastic reset member 34, the pressing head 31 rotates back to its original position, and drives the locking ball 3222 to slide from the unlocking transition surface 14 to the unlocking surface 12, until it is locked into the reset lock cavity 121. During this period, the locking mechanism 32 and the unlocking drive mechanism 33 move along direction A under the drive of the pressing head 31, no longer pressing against the contact support member 24. The contact support member 24 is lifted by the second elastic member 25, which drives the moving contact 22 to move to separate from the stationary contact 23, completing the manual reset of the emergency stop button.

[0126] b) Remotely unlock and reset by unlocking the drive mechanism 33.

[0127] Power is supplied to the trigger circuit via an external remote system, causing the drive shaft 3311 of the rotary motor 331 to rotate the locking mechanism 32 in the unlocking direction. The locking ball 3222 rotates and disengages from the emergency stop locking cavity 111. Since the pressing head 31 is connected to the locking mechanism 32, it rotates synchronously under the drive of the locking mechanism 32, causing the elastic reset member 34 to twist and deform (at this time, the elastic reset member 34 is in a compressed and torsional energy storage state). After the locking ball 3222 disengages from the emergency stop locking cavity 111, the elastic reset member 34 extends and resets, causing the pressing head 31 and the locking mechanism 32 to spring back in the reset direction. This causes the mounting base 332 to no longer press against the contact support member 24. Under the rebound action of the second elastic member 25, the contact support member 24 causes the moving contact 22 to separate from the stationary contact 23, cutting off the trigger circuit and preventing the drive shaft 3311 from rotating further. The pressing head 31 returns to its original position under the elastic force of the elastic reset member 34, and at the same time drives the locking mechanism 32 to rotate and engage in the reset lock cavity 121, and drives the unlocking drive member to return to its original position, thus completing the remote reset of the emergency stop button.

[0128] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An emergency stop button, characterized in that, include: The frame assembly (1) is provided with an emergency stop lock chamber (111) and a reset lock chamber (121). Contact component (2), connected to the frame assembly (1) and having an on / off state; The pressing assembly (3) includes a pressing head (31), a locking mechanism (32), and an unlocking drive mechanism (33). The pressing head (31) and the unlocking drive mechanism (33) are both connected to the locking mechanism (32). The pressing head (31) is movably inserted through the housing assembly (1). The locking mechanism (32) has a locked state that engages with the emergency stop lock cavity (111) and an unlocked state that engages with the reset lock cavity (121). The pressing head (31) is used to be subjected to external force to drive the locking mechanism (32) to switch between the locked state and the unlocked state, so that the contact component (2) switches between on and off states; the unlocking drive mechanism (33) is configured to be located in the trigger circuit, the trigger circuit being used to control the unlocking drive mechanism (33) to rotate, so that the locking mechanism (32) switches from the locked state to the unlocked state under the drive of the unlocking drive mechanism (33); The contact component (2) is connected to the trigger circuit. The contact component (2) conducts the trigger circuit when the locking mechanism (32) is in the locked state, and cuts off the trigger circuit when the locking mechanism (32) is in the unlocked state.

2. The emergency stop button according to claim 1, characterized in that, The unlocking drive mechanism (33) is rotatably provided with a drive shaft (3311), which is connected to the locking mechanism (32); the pressing head (31) is rotatably provided on the housing assembly (1) and is aligned with the rotation axis of the drive shaft (3311); the pressing assembly (3) further includes an elastic reset member (34), which is connected between the pressing head (31) and the housing assembly (1); The locking mechanism (32) rotates away from the emergency stop lock cavity (111) under the drive of the pressing head (31) or the drive shaft (3311), and rotates into the reset lock cavity (121) under the elastic force of the elastic reset member (34).

3. The emergency stop button according to claim 2, characterized in that, The locking mechanism (32) includes a locking sleeve (321) and an elastic locking element (322); The pressing head (31) and the drive shaft (3311) are both connected to the locking sleeve (321). The locking sleeve (321) is rotatably disposed in the housing assembly (1) along its own axis. A guide hole (3211) is provided on the locking sleeve (321) in the radial direction. The elastic locking member (322) is telescopically disposed in the guide hole (3211). One end of the elastic locking member (322) extending out of the guide hole (3211) can slide along the wall surface of the housing assembly (1) and be engaged in the emergency stop locking cavity (111) or the reset locking cavity (121).

4. The emergency stop button according to claim 3, characterized in that, The frame assembly (1) is provided with a locking surface (11) and an unlocking surface (12). The emergency stop locking cavity (111) is recessed in the locking surface (11), and the reset locking cavity (121) is recessed in the unlocking surface (12). The unlocking surface (12) protrudes relative to the locking surface (11) so that a first limiting surface (13) is formed between the unlocking surface (12) and the locking surface (11). An unlocking transition surface (14) is provided on one side of the first limiting surface (13) on the frame assembly (1). The locking surface (11) and the unlocking surface (12) are both smoothly connected to the unlocking transition surface (14). The elastic locking member (322) can slide along the locking surface (11) to the unlocking transition surface (14), and under the elastic force of the elastic reset member (34), slide from the unlocking transition surface (14) to the unlocking surface (12).

5. The emergency stop button according to claim 4, characterized in that, The frame assembly (1) has a second limiting surface (15) and a third limiting surface (16) that are disposed opposite to each other. The second limiting surface (15) is disposed on the side of the unlocking transition surface (14) away from the first limiting surface (13), and is disposed at an angle to the unlocking transition surface (14); The third limiting surface (16) is disposed on the side of the locking surface (11) away from the unlocking transition surface (14) and is set at an angle to the locking surface (11). The third limiting surface (16) is connected to the first limiting surface (13) and is set at an angle. The second limiting surface (15) and the third limiting surface (16) are both used to stop the elastic locking member (322).

6. The emergency stop button according to claim 3, characterized in that, The elastic locking member (322) includes a first elastic member (3221) and a locking ball (3222) connected together. The end of the first elastic member (3221) away from the locking ball (3222) is connected to the guide hole (3211). The locking ball (3222) has the states of being engaged in the emergency stop locking cavity (111) and the reset locking cavity (121).

7. The emergency stop button according to any one of claims 1-6, characterized in that, The contact assembly (2) includes a mounting housing (21), a moving contact (22), a stationary contact (23), a contact support (24), and a second elastic member (25) disposed within the mounting housing (21). The mounting housing (21) is connected to the frame assembly (1), the moving contact (22) is mounted on the contact support (24), and the second elastic member (25) is connected between the contact support (24) and the mounting housing (21); The contact support (24) is used to drive the moving contact (22) to contact the stationary contact (23) under the push of the pressing component (3), and to drive the moving contact (22) to separate from the stationary contact (23) under the elastic force of the second elastic member (25).

8. The emergency stop button according to claim 7, characterized in that, The unlocking drive mechanism (33) and the pressing head (31) are respectively connected to the two ends of the locking mechanism (32). The unlocking drive mechanism (33) is movably disposed on the frame assembly (1). The contact support (24) can move under the push of the unlocking drive mechanism (33).

9. The emergency stop button according to claim 8, characterized in that, One of the unlocking drive mechanism (33) and the housing assembly (1) is provided with a guide groove (150), and the other is provided with a slider (3323). The slider (3323) and the guide groove (150) are slidably engaged along the moving direction of the unlocking drive mechanism (33).

10. An electrical device, characterized in that, It includes a housing and an electrical structure disposed within the housing, wherein the housing is provided with an emergency stop button as described in any one of claims 1-9, and the contact component (2) of the emergency stop button is electrically connected to the electrical structure.

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